I know that basically all the person who made this gets are suggestions or bug reports so sorry that I'm just piling on.
I love this program, and it's incredibly useful.
I have two suggestions. The first one being, with the different districts, I think a cool thing would be an option to have a shopping type district. That leads to my second suggestion. If when you hovered over a certain house or building, it would say what it was. It would just be randomized to fit whatever the district was. If there was the upper district, it would just be mansions and large houses, if it was the shopping district, it would blacksmiths and food places and hotels (along with others). That's the end of my ideas, thanks!